Vibrational Anharmonicity and Lattice Thermal Properties
- 1 October 1954
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 96 (1) , 57-62
- https://doi.org/10.1103/physrev.96.57
Abstract
It has been believed for some time that anharmonicity of lattice vibrations is responsible for the continued rise of the specific heats of certain solids in the classical temperature region. A general analysis is here carried out of the linear chain model interacting through a Morse potential. All the major thermal properties, such as specific heats, thermal expansion, and compressibility are derived, and a tentative comparison is made with observed properties of the alkali metals.Keywords
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